静态变量（使用同一个类声明的对象可以共享一个值）

欢迎大家来到IT世界,在知识的湖畔探索吧!

要在属于同一种类的对象之间共享数据值，可以使用static。

namespace demo3
{

     class point  //定义点
    {
        public int x;
        public int y;
    }
    class line
    {
        static public point origin = new point();
        public point ending = new point();
    }
    
    class Program
    {
        static void Main(string[] args)
        {
            line lin1 = new line();
            line lin2 = new line();

            
            line.origin.x = 1;
            line.origin.y = 5;

            lin1.ending.x = 6;
            lin1.ending.y = 7;

            lin2.ending.x = 8;
            lin2.ending.y = 9;

            Console.WriteLine("1开始点 {0}{1}",line.origin.x,line.origin.y);

            Console.WriteLine("1结束点  {0} {1}",lin1.ending.x,lin1.ending.y);

            Console.WriteLine("2开始点 {0}{1}", line.origin.x, line.origin.y);

            Console.WriteLine("2结束点  {0} {1}", lin2.ending.x, lin2.ending.y);


            line.origin.x = 999;
            line.origin.y = 888;

            Console.WriteLine("1开始点 {0}{1}", line.origin.x, line.origin.y);

            Console.WriteLine("1结束点  {0} {1}", lin1.ending.x, lin1.ending.y);

            Console.WriteLine("2开始点 {0}{1}", line.origin.x, line.origin.y);

            Console.WriteLine("2结束点  {0} {1}", lin2.ending.x, lin2.ending.y);


            Console.ReadKey();
        }
    }

}

欢迎大家来到IT世界,在知识的湖畔探索吧!